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Finding the Fourth Proportional to 190,439.80, 285,659.70 and 57,340.60

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Solution

The fourth proportional to 190,439.80, 285,659.70 and 57,340.60 is: 86,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,439.80 : 285,659.70 = 57,340.60 : x
  2. Step 2: Convert to fraction form
    190,439.80/285,659.70 = 57,340.60/x
  3. Step 3: Cross multiply
    190,439.80x = 285,659.70 × 57,340.60
  4. Step 4: Simplify right side
    190,439.80x = 16,379,898,593.82
  5. Step 5: Solve for x
    x = 16,379,898,593.82/190,439.80
  6. Step 6: Final answer
    x = 86,010.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.